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Efficacy and Economics of Weed Control Methods in Cotton (Gossypium hirsutum)

Published online by Cambridge University Press:  12 June 2017

Charles E. Snipes ,
Robert H. Walker ,
Ted Whitwell ,
Gale A. Buchanan ,
John A. McGuire  and
Neil R. Martin
Charles E. Snipes
Affiliation:
Ext. Weed Sci., Dep. Agron. and Soils, Alabama Agric. Exp. Stn. Auburn Univ., AL 36849
Robert H. Walker
Affiliation:
Ext. Weed Sci., Dep. Agron. and Soils, Alabama Agric. Exp. Stn. Auburn Univ., AL 36849
Ted Whitwell
Affiliation:
Alabama Agric. Exp. Stn., Alabama Agric. Exp. Stn. Auburn Univ., AL 36849
Gale A. Buchanan
Affiliation:
Dep. Agric. Econ. and Rural Sociology, Alabama Agric. Exp. Stn. Auburn Univ., AL 36849
John A. McGuire
Affiliation:
Dep. Agric. Econ. and Rural Sociology, Alabama Agric. Exp. Stn. Auburn Univ., AL 36849
Neil R. Martin
Affiliation:
Dep. Agric. Econ. and Rural Sociology, Alabama Agric. Exp. Stn. Auburn Univ., AL 36849
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Abstract

Four cultivations of cotton [Gossypium hirsutum L. ‘Stoneville 213′] alone failed to reduce green weed biomass or increase seed cotton yields above that of the no weed control treatment, and thus resulted in a negative net return (−200 to −450 $/ha) all 4 yr. Two cultivations plus two hand-hoeings reduced green weed biomass and increased seed cotton yields 3 out of 4 yr, thus a positive net return was produced for 3 yr ranging from 300 to 640 $/ha. Fluometuron [1,1-dimethyl-3-(α,α,α-trifluoro-m-tolyl)urea] alone was the most effective treatment in reducing green weed biomass and increasing seed cotton yields, and produced the highest net return, 280 to 420 $/ha for the 4-yr period. The addition of cultivation did not improve the fluometuron treatment. However, diuron [3-(3,4-dichlorophenyl)-1,1-dimethylurea)] required three supplementary cultivations to equal the single fluometuron treatment. Trifluralin (α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine) plus three cultivations did not equal the single fluometuron treatment, although a positive net return was obtained every year. The addition of trifluralin to fluometuron also failed to improve weed control or net return over that of fluometuron alone.

Keywords

Cultivationhand-hoeingfluometurondiurontrifluralin
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 32 , Issue 1 , January 1984 , pp. 95 - 100
Copyright
Copyright © 1984 by the Weed Science Society of America 

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References

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